Does Smoking Make You An Idiot?

Smoking is directly related to lower IQ, according to a study by researchers at Tel Aviv University in Israel and published in the journal Addiction.

The researchers tested the IQ of more than 20,000 healthy men aged 18 to 21 who were serving in the Israeli army or who have recently completed their service. Twenty-eight percent of men in the sample smoked, while 3 percent were former smokers and 68 percent had never smoked.

The average IQ of smokers was 94, compared to 101 among non-smokers. Men who smoke more than a pack of cigarettes per day had an average IQ of 90 even if a normal IQ is between 84 and 116, the difference observed in the study are still considered significant.

In the spirit of couples in which one brother smoked and the other not, a smoker continuously tested low IQ.

The study could not demonstrate that smoking caused the lower IQ or with a lower IQ and vulnerable people to smoke, but scientists do not exclude the possibility that the low socioeconomic status and smoking, and produces a lower IQ.

"In the health profession, we generally believed that smokers are more likely the kind of people growing up in tough neighborhoods, or who have received less education in good schools," says researcher Mark Weiser, Tel Hashomer hospital, too. "But because our study included patients with different socioeconomic backgrounds, we were able to exclude the economy as an important factor."

Weiser said that people with lower IQs are more likely to suffer from other addictions and health problems and weight.

"People from the bottom of the IQ is generally poor overall decision-making skills regarding their health," he said.

"Our study may help parents and professionals to help vulnerable young people make better choices."

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Florian's picture

I have an IQ of 140-145

I have an IQ of 140-145 according to the International High IQ Society and smoke 3.5 packs of cigarettes per day for more than 25 years.

Can you share for us the URL of the study? ... and BTW, can you stop spamming :)